#ifndef __M_CONNECTION_H__
#define __M_CONNECTION_H__
#include "muduo/proto/dispatcher.h"
#include "muduo/proto/codec.h"
#include "muduo/base/Logging.h"
#include "muduo/base/Mutex.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpClient.h"
#include "muduo/net/EventLoopThread.h"
#include "muduo/base/CountDownLatch.h"

#include "mq_channel.hpp"
#include "mq_worker.hpp"
namespace xypmq
{
    class Connection
    {
        public:
        using ptr = std::shared_ptr<Connection>;
        Connection(const std::string &sip,int sport, const AsyncWorker::ptr &worker):
        _latch(1),_client(worker->loopthread.startLoop(),muduo::net::InetAddress(sip,sport),"Client"),
        _dispatcher(std::bind(&Connection::onUnknownMessage,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3)),
        _codec(std::make_shared<ProtobufCodec>( std::bind(&ProtobufDispatcher::onProtobufMessage, &_dispatcher, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3))),
        _worker(worker),
        _channel_manager(std::make_shared<ChannelManager>())
            {
                _dispatcher.registerMessageCallback<basicCommonResponse>(std::bind(&Connection::basicResponse,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3));
                _dispatcher.registerMessageCallback<basicConsumeResponse>(std::bind(&Connection::consumeResponse,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3));
                _client.setMessageCallback(std::bind(&ProtobufCodec::onMessage, _codec.get(), std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
                _client.setConnectionCallback(std::bind(&Connection::onConnection,this,std::placeholders::_1));

                _client.connect();
                _latch.wait();//阻塞等待，直到连接建立成功
            }
            Channel::ptr openChannel()
            {
                Channel::ptr channel=_channel_manager->create(_conn,_codec);
                bool ret = channel->openChannel();
            if (ret == false) {
                DLOG("打开信道失败！");
                return Channel::ptr();
            }
            return channel;
            }
            void closeChannel(const Channel::ptr &channel)
            {
                channel->closeChannel();
                _channel_manager->remove(channel->cid());
            }
    private:
        void basicResponse(const muduo::net::TcpConnectionPtr& conn, const basicCommonResponsePtr& message, muduo::Timestamp) {
            //1. 找到信道
            Channel::ptr channel = _channel_manager->get(message->cid());
            if (channel.get() == nullptr) {
                DLOG("未找到信道信息！");
                return;
            }
            //2. 将得到的响应对象，添加到信道的基础响应hash_map中
            channel->putBasicResponse(message);
        }
        void consumeResponse(const muduo::net::TcpConnectionPtr& conn, const basicConsumeResponsePtr& message, muduo::Timestamp){
            //1. 找到信道
            Channel::ptr channel = _channel_manager->get(message->cid());
            if (channel.get() == nullptr) {
                DLOG("未找到信道信息！");
                return;
            }
            //2. 封装异步任务（消息处理任务），抛入线程池
            _worker->pool.push([channel, message](){
                channel->consume(message);
            });
        }
        void onUnknownMessage(const muduo::net::TcpConnectionPtr& conn, const MessagePtr& message, muduo::Timestamp) {
            LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
            conn->shutdown();
        }
        void onConnection(const muduo::net::TcpConnectionPtr&conn){
            if (conn->connected()) {
                _latch.countDown();//唤醒主线程中的阻塞
                _conn = conn;
            }else {
                //连接关闭时的操作
                _conn.reset();
            }
        }
    private:
        void onUnknownMessage(const muduo::net::TcpConnectionPtr& conn, const MessagePtr& message,muduo::Timestamp)
        {
            LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
            conn->shutdown();
        }   
         //连接建立成功时候的回调函数，建立成功的时候，唤醒上面的阻塞
         void onConnection(const muduo::net::TcpConnectionPtr&conn)
         {
            if(conn->connected())
            {
                _latch.countDown();
                _conn=conn;
            }
            else
            {
                //连接操作关闭
                _conn.reset();
            }
         }
    private:
        muduo::CountDownLatch _latch;//处理同步
        muduo::net::EventLoopThread _loopthread;//处理异步
        muduo::net::TcpConnectionPtr _conn;//客户端对应的连接
        muduo::net::TcpClient _client;//客户端
        ProtobufDispatcher _dispatcher;//请求分发器
        ProtobufCodecPtr _codec;//协议处理器

        AsyncWorker::ptr _worker;
        ChannelManager::ptr _channel_manager;
    };
}
#endif